Drawn or worked by a single horse. / (by extension) Small, insignificant.

(Australia) Said of a person who is on their provisional driver's licence and displays P-plates on their vehicle; not yet possessing a full driver's licence.

(Australia) Said of a person who is on their learner's permit and displays L-plates on their vehicle; not yet possessing a provisional or full driver's licence.

A single page that summarizes a topic, such as a process, a strategy, a business plan or issue.

Alternative form of on one's L's.

Alternative form of on one's P's.

(now regional, dated, idiomatic, slang) Not a single one, none (of a number of people or things). / (now regional, dated, idiomatic, slang) Not; with a singular pronoun, negates the clause.

(informal) That's a funny joke (often said to indicate that what has just been said is laughably unbelievable.)

(informal) Performing as well as one can.

(US) used to emphasize that one is behaving or going to behave in a trustworthy manner. / (dated) expected to do what one has promised, expected to uphold one's promise.